快照】： 可视性分析作为重要的 GIS空间分析 ,它包括两个基本因子 :一是两点间的通视性(Intervisibility) ,一是可 视域 ( Viewshed ) ,即对于给定的观察点所覆盖的区域。
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intervisibility testing algorithm 通视性检查算法
point to point intervisibility testing 点到点的通视性检查
The following rule is a useful test for intervisibility .
下面介绍一种检验通视的方法。
An L-band safety remote control system is introduced which is composed of three stations and one center in order to increase coverage and overcome the limit of earth curvature to intervisibility.
本文介绍一种L频段安控系统，它由“三站一中心”组成，用三站无线接力的方法来提高覆盖范围并解决地球曲率对通视的限制。
The intervisibility with the courtyards, the consistent materials and the reluctant color scheme give a calm atmosphere.
与庭院的通视性、一致的材料和配色方案创造出平静的氛围。
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